Adaptive-Droop-Coefficient VSG Control for Cost-Efficient Grid Frequency Support

Existing adaptive virtual synchronous generator (VSG) control methods are aiming at improving transient performance or enhance frequency support effect, at the cost of more transient energy demand (TED), which leads to a larger energy storage system. Therefore, an adaptive-droop-coefficient (ADC) VSG control is proposed to reduce the TED without sacrificing grid frequency support effect. Simulation and experimental results show that the TED of the proposed control is significantly reduced compared to existing fixed and adaptive parameter VSG methods.